c# - Change WebBrowser content before document completed -


i have webbrowser control , navigating local html page. have code:

webbrowser.documentcompleted += ondomcontentloaded; public void ondomcontentloaded(object sender, eventargs e) {     var browser = (sender webbrowser);      if (browser != null && browser.document != null && browser.document.body != null)     {         var documenthtml = browser.document.body.innerhtml;         browser.document.body.innerhtml = helper.modifycontent(documenthtml);     } }

in helper.modifycontent modifying html content. , have 1 problem: html page loads , it's being modified (i see few milliseconds html content changing). how can change html content before it's shown in webbrowser? , can't use such methods getelementbyid() , similar.


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